In Yuan Zhen's novels, pheromone was a literary concept. It referred to the characters, plots, environment, and other elements in the works that conveyed specific meanings and emotional information through specific language expressions to provide readers with emotional resonance and reading experience. Marked pheromones refer to the specific language symbols used in the characters or plots in the original novels, such as adjectives, terms, and verbs. The meaning and emotional direction of these symbols can be clearly expressed by the author to provide readers with clear reading tips and experiences. In Yuan Zhen's novels, the use of pheromones could deeply shape the characters, promote the development of the plot, and reveal the meaning of the theme. Therefore, it was favored by authors and readers. Through the use of pheromones, the author could convey his creative intentions and emotional expressions to the readers to build emotional resonance and create barriers, thus increasing the artistic value and attractiveness of the works.